One of the questions we get asked most often is what is trailer stability and does my car have this safety feature. So what is Trailer stability or TSP?
When trailers or caravans start to sway dangerously, it is usually a result of the way of driving, speed, crosswinds, road condition and/or, a badly laden trailer or caravan. Caravans and horse box trailers present a special risk. When "snaking" occurs, many drivers display the wrong reaction and under stress, try to keep their tow vehicle and trailer on track by counter steering. This will only amplify the swaying effect and eventually result in an accident. If snaking has started, it could be difficult or even impossible to suppress. This makes the car/trailer combination difficult to control and there is a risk that you could, for example, end up in the wrong lane or leave the carriageway.
The specific additional function of ESP, known as the Trailer Stability Program (TSP), recognizes swaying on the basis of the typical yaw rate in the tow vehicle. This allows for the right measures to be initiated at an early stage: the towing combination is slowed down to a non-critical speed by automatically braking all 4 wheels of the towing vehicle individually, whilst simultaneously reducing the engine speed and thus correcting the swaying movement. In most cases, providing the vehicle has been equipped a "Vehicle Specific Towbar Wiring Kit", the additional software in the ESP module is activated as soon as the electrical connection cable of the trailer is plugged into the towbar socket.
Towbex LTD, Unit 3 Elm Business Units, 67 Chartwell road, Lancing Business Park, Lancing, BN15 8FD.
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